There is a company that I get my raw meaty bones pre packed from,this is grounded down, it is human grade meat with no addative, the animal is killied one day minced and frozen the same day and then delivered so really fresh, I give this to my dogs, but I also ensure they have larger bones to knaw on for their teeth, I also give them fragaria to keep their teeth clean this prevents tartar bulding up, what you need to check is the water content in some of these pre prepared raw foods some can be very watery once defrosted, also I would not give raw meat at the same time as a dry kibble both of these foods digest at different rates and cause a build up of gas in the dogs stomach which may result in bloat.
Mo